22. CABIN PRESS Panel Flashcards Preview

Allegiant A320 Exam Guide > 22. CABIN PRESS Panel > Flashcards

Flashcards in 22. CABIN PRESS Panel Deck (8)
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1
Q

What does the DITCHING pb do?

A
Closes all valves below the waterline:
 C – Cargo Compartment Isolation Valves
 A – Avionics ventilation (inlet/extract valves)
 R – Ram air inlet
 P – Pack flow control valves
 O – Outflow valve (if in AUTO)
2
Q

Can the pilot control the outflow valve?

A

Yes, select MAN on the MODE SEL and use the MAN V/S CTL switch

3
Q

How many auto pressure controllers?

A

2, only one controller operates at a time and automatic transfer occurs:
 70s after each landing
 If the operating system fails

4
Q

How do you manually switch controllers?

A

Switch MODE SEL to MAN for 10 seconds, then back to AUTO

5
Q

What does an amber FAULT light in the MODE SEL pb indicate?

A

Both automatic pressure controllers are faulty.

6
Q

The LDG ELEV selector in the AUTO position does what?

A

The pressurization system uses the FMGS data to construct an optimized pressurization schedule.

7
Q

Where does the pressurization system obtain the landing elevation from?

A

FMGC Database

8
Q

When out of the AUTO position, what is different?

A

The pressurization system uses the manually selected landing elevation.